What are all these "Bug: soft lockup" messages about?
This document (7017652) is provided subject to the disclaimer at the end of this document.
SUSE Linux Enterprise Server 12
This 'soft lockup' can happen if the kernel is busy, working on a huge amount of objects which need to be scanned, freed, or allocated, respectively.
The stack traces of those tasks can give a first idea about what the tasks were doing. However, to be able to examine the cause behind the messages, a kernel dump would be needed.
While these messages cannot be disabled entirely, in some situations, increasing the time before these
hostname:~ # echo 20 > /proc/sys/kernel/watchdog_thresh
hostname:~ # echo "kernel.watchdog_thresh=20" > /etc/sysctl.d/99-watchdog_thresh.conf
hostname:~ # sysctl -p /etc/sysctl.d/99-watchdog_thresh.conf
The watchdog daemon will send an non-maskable interrupt (NMI) to all CPUs in the system who, in turn, print the stack traces of their currently running tasks.
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- Document ID:7017652
- Creation Date: 31-May-2016
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Desktop
- SUSE Linux Enterprise Server
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